Abstract: A clutch mechanism of electric tools has a driving shaft, a clutch mechanism, and a torque adjusting unit. An end of the driving shaft is connectable to an internal motor and another end of the driving shaft has a sliding sleeve, and a first spring is disposed between the driving shaft and the sliding sleeve. The clutch mechanism has a toothed ring secured onto the tool, the toothed ring having a clutching plate connected to the driving shaft, the toothed ring further having a sun gearing set and a planetary gearing set internally. The torque adjusting unit has a fixed sleeve secured onto the toothed ring and engaging an adjusting sleeve at a front end, a cap, a second spring and a bearing ring sequentially sleeved onto the driving shaft, a plurality of plugs passing through the fixed sleeve being sandwiched between the adjusting sleeve and the cap.

Abstract: An aid pad of external compression treatment course includes a pad body and at least one adapter tube. The adapter tube is mounted in the pad body with two ends extending out of the pad body. The pipelines of the gas envelopes are collected in the pad body to beautify the appearance. The gas source, the controller and a certain number of gas envelopes are cooperatively integrated into the external compression equipment for executing the external compression treatment course. Therefore, the aid pad can eliminate the randomness of the conventional external compression equipment, reduce the cost and volume of the external compression equipment and have higher mobility in use. The aid pad can be quickly transferred to different sites without limitation of the mattress form. Therefore, the pain of a user (patient) can be eased in a more positive and reliable manner.